Your high sell orders are a very good idea, but your putting them too high. Put them at $2. More realistic, and might actually make them take your trade seriously. Like wow, look at all those shares that are neving moving until $2 is cleared. The $5 trades they take as a joke. They know if it hits even $1, those trades are coming down. At $2, they might think differently.
Also a theory that if they are put up to sell, they cant use those shares to short. But since its $5, they might short them anyway, as they know those wouldnever be filled. At $2, they might be out of luck to do that.
NOt sure of the factuality of that however(broker rules on shares in "a sell order". I know if I were to ask to buy shares at .20 cents, that money is removed, and cant be accessed, so it makes sense the other way too I suppose.